feat(library): add combined quality label #511

lib/models/settings.dart

@@ -8,6 +8,7 @@ class AppSettings {
   static const String homeFeedProviderOff = '__off__';
   static const String libraryQualityLabelBitrate = 'bitrate';
   static const String libraryQualityLabelBitDepth = 'bit_depth';
+  static const String libraryQualityLabelBitDepthBitrate = 'bit_depth_bitrate';
 
   final String defaultService;
   final String audioQuality;
@@ -41,7 +42,8 @@ class AppSettings {
   /// 'last' (keep last used), 'all', 'albums', 'singles', or 'playlists'.
   final String defaultLibraryView;
 
-  /// Library badge text: measured bitrate or the legacy bit depth/sample rate.
+  /// Library badge text: measured bitrate, bit depth/sample rate, or the
+  /// combined bit depth/bitrate label.
   final String libraryQualityLabelMode;
   final bool askQualityBeforeDownload;
   final bool enableLogging;

lib/providers/settings_provider.dart

@@ -380,9 +380,13 @@ class SettingsNotifier extends Notifier<AppSettings> {
   }
 
   String _normalizeLibraryQualityLabelMode(String value) {
-    return value == AppSettings.libraryQualityLabelBitDepth
-        ? AppSettings.libraryQualityLabelBitDepth
-        : AppSettings.libraryQualityLabelBitrate;
+    return switch (value) {
+      AppSettings.libraryQualityLabelBitDepth =>
+        AppSettings.libraryQualityLabelBitDepth,
+      AppSettings.libraryQualityLabelBitDepthBitrate =>
+        AppSettings.libraryQualityLabelBitDepthBitrate,
+      _ => AppSettings.libraryQualityLabelBitrate,
+    };
   }
 
   String _normalizeExtensionVerificationBrowserMode(String value) {

lib/screens/settings/library_settings_page.dart

@@ -404,6 +404,10 @@ class _LibrarySettingsPageState extends ConsumerState<LibrarySettingsPage> {
       return '${context.l10n.audioAnalysisBitDepth} & '
           '${context.l10n.audioAnalysisSampleRate}';
     }
+    if (mode == AppSettings.libraryQualityLabelBitDepthBitrate) {
+      return '${context.l10n.audioAnalysisBitDepth} & '
+          '${context.l10n.trackConvertBitrate}';
+    }
     return context.l10n.trackConvertBitrate;
   }
 
@@ -421,6 +425,12 @@ class _LibrarySettingsPageState extends ConsumerState<LibrarySettingsPage> {
         '${context.l10n.audioAnalysisBitDepth} & '
             '${context.l10n.audioAnalysisSampleRate}',
       ),
+      (
+        AppSettings.libraryQualityLabelBitDepthBitrate,
+        Icons.multiline_chart_rounded,
+        '${context.l10n.audioAnalysisBitDepth} & '
+            '${context.l10n.trackConvertBitrate}',
+      ),
     ];
     showModalBottomSheet<void>(
       context: context,

lib/utils/audio_quality_badge_policy.dart

@@ -5,9 +5,13 @@ import 'package:spotiflac_android/utils/string_utils.dart';
 const highQualityBadgeBitrateThresholdKbps = 900;
 
 String normalizeLibraryQualityLabelMode(String? mode) {
-  return mode == AppSettings.libraryQualityLabelBitDepth
-      ? AppSettings.libraryQualityLabelBitDepth
-      : AppSettings.libraryQualityLabelBitrate;
+  return switch (mode) {
+    AppSettings.libraryQualityLabelBitDepth =>
+      AppSettings.libraryQualityLabelBitDepth,
+    AppSettings.libraryQualityLabelBitDepthBitrate =>
+      AppSettings.libraryQualityLabelBitDepthBitrate,
+    _ => AppSettings.libraryQualityLabelBitrate,
+  };
 }
 
 /// Builds a Library label from metadata already held in memory. Lossy formats
@@ -21,22 +25,61 @@ String? buildLibraryAudioQualityLabel({
   int? sampleRate,
   String? storedQuality,
 }) {
-  final bitrateLabel = bitrateKbps != null && bitrateKbps > 0
-      ? buildDisplayAudioQuality(bitrateKbps: bitrateKbps, format: format)
+  final stored = normalizeOptionalString(storedQuality);
+  final storedBitrate = _bitrateFromStoredQuality(stored);
+  final effectiveBitrate = bitrateKbps != null && bitrateKbps > 0
+      ? bitrateKbps
+      : storedBitrate;
+  final bitrateLabel = effectiveBitrate != null
+      ? buildDisplayAudioQuality(bitrateKbps: effectiveBitrate, format: format)
       : null;
   final bitDepthLabel =
       bitDepth != null && bitDepth > 0 && sampleRate != null && sampleRate > 0
       ? buildDisplayAudioQuality(bitDepth: bitDepth, sampleRate: sampleRate)
       : null;
-  final fallback = normalizeOptionalString(storedQuality);
+  final normalizedMode = normalizeLibraryQualityLabelMode(mode);
 
-  final useBitDepth =
-      normalizeLibraryQualityLabelMode(mode) ==
-          AppSettings.libraryQualityLabelBitDepth &&
-      !isLossyAudioFormat(format);
-  return useBitDepth
-      ? bitDepthLabel ?? bitrateLabel ?? fallback
-      : bitrateLabel ?? bitDepthLabel ?? fallback;
+  if (isLossyAudioFormat(format)) {
+    return bitrateLabel;
+  }
+
+  return switch (normalizedMode) {
+    AppSettings.libraryQualityLabelBitDepth =>
+      bitDepthLabel ?? bitrateLabel ?? stored,
+    AppSettings.libraryQualityLabelBitDepthBitrate =>
+      _buildBitDepthBitrateLabel(
+            bitDepth: bitDepth,
+            bitrateKbps: effectiveBitrate,
+          ) ??
+          bitrateLabel ??
+          bitDepthLabel ??
+          stored,
+    // Do not display bit depth/sample rate while the user selected bitrate.
+    // Legacy rows are backfilled separately; a stored measured bitrate remains
+    // usable while that migration completes.
+    _ => bitrateLabel,
+  };
+}
+
+int? _bitrateFromStoredQuality(String? quality) {
+  final match = RegExp(
+    r'\b(\d+(?:\.\d+)?)\s*(k(?:bps)?|mbps)\b',
+    caseSensitive: false,
+  ).firstMatch(quality ?? '');
+  final value = double.tryParse(match?.group(1) ?? '');
+  if (value == null || value <= 0) return null;
+  final unit = match?.group(2)?.toLowerCase();
+  return unit == 'mbps' ? (value * 1000).round() : value.round();
+}
+
+String? _buildBitDepthBitrateLabel({int? bitDepth, int? bitrateKbps}) {
+  if (bitDepth == null ||
+      bitDepth <= 0 ||
+      bitrateKbps == null ||
+      bitrateKbps <= 0) {
+    return null;
+  }
+  return '$bitDepth-bit/${bitrateKbps}kbps';
 }
 
 /// Preserves the highlighted color used by legacy 24-bit Library badges while